I've explained on the text. The minus "-" is the key right over the brackets on
USA based keyboards, and at a good right spot in almost all accessible in just
one key press. The square brackets, are not available (visually) in some and
you need to find a combination of keys to invoke it. Instead of 3 physical keys
involved, we will have just 2. "/" and "-", instead of "#", "[", and "]". The
complex keystrokes #[ and ]# becomes just the positional elements //\- -//
As you can see, it was planned to even create good visual "header like" comment
as a side effect.
//-------------------- Header ----------------------
This is good.
----------------------------------------------------//